Fried Mozzarella and Grilled Peach Burgers

Ingredients

• 1 pound ground beef
• smoked salt, chipotle salt or just salt + pepper, for sprinkling
• 2 tablespoons Celia's Traditional balsamic vinegar
• 12 ounces fresh mozzarella, sliced into 8 thick round slices
• 1 cup Panko bread crumbs
• 1/4 cup flour
• 1/3 cup parmesan cheese, grated
• 2 eggs, beaten
• 1/2 teaspoon salt + pepper
• 1/4 teaspoon cayenne pepper
• 2 tablespoons olive oil
• 4 large nectarines or peaches, ripe, but firm peaches, sliced into 1/4 inch rounds
• 1 tablespoon honey or brown sugar
• 4 brioche or pretzel buns, toasted